Create like some cache function with JSON file.

CacheService.ts

import Application from '@ioc:Adonis/Core/Application'
import fs from 'fs'

export default class CacheService {
  private jsonPath: string

  public static initialize(key: string): CacheService {
    const instance = new CacheService()
    instance.jsonPath = `${Application.tmpPath('cache')}/${key}.json`
    return instance
  }

  private checkCacheExists() {
    if (!fs.existsSync(Application.tmpPath('cache'))) {
      fs.mkdirSync(Application.tmpPath('cache'))
    }
    return fs.existsSync(this.jsonPath)
  }

  public async get() {
    if (this.checkCacheExists()) {
      const data = fs.readFileSync(this.jsonPath, 'utf8')
      return JSON.parse(data)
    } else {
      return null
    }
  }

  public async put(payload: any) {
    fs.writeFileSync(this.jsonPath, JSON.stringify(payload))
    return payload
  }

  public async flush() {
    fs.rmSync(this.jsonPath)
    return true
  }
}